Heat-absorbing particle

Abstract

A heat-absorbing particle has a diameter of 1˜1000 μm and comprises a shell portion and a core portion. The shell portion is made of a high molecular polymer selected from a group consisting of melamine-formaldehyde, urea-formaldehyde resins, polyurethanes, and acrylics. The core portion is made of a heat-absorbing material that has a melting point at about 35° C.-70° C. and that is selected from a group consisting of straight chain alkanes, alcohols, and organic acids. A weight of the shell portion is about {fraction (1/20)}-½ of that of the core portion. The heat-absorbing particle may be processed to provide a coating material that may be coated on a surface of an object for heat-dissipation and/or antioxidation. The heat-absorbing material may further include a dye for providing a colorful appearance for the coating.

What is claimed is:  
     
         1 . A heat-absorbing particle having a diameter of 1˜1000 μm and comprising a shell portion and a core portion, the shell portion being made of a high molecular polymer selected from a group consisting of melamine-formaldehyde, urea-formaldehyde resins, polyurethanes, and acrylics, the core portion being made of a heat-absorbing material that has a melting point at about 35° C.-70° C. and that is selected from a group consisting of straight chain alkanes, alcohols, and organic acids, a weight of the shell portion being about {fraction (1/20)}-½ of that of the core portion.  
     
     
         2 . The heat-absorbing particle as claimed in  claim 1 , wherein the heat-absorbing material is selected from a group consisting of paraffin, docosane, tetracosane, tetradecanol, hexadecanol, octodecanol, dodecanic acid, tetradecanoic acid, hexadecanoic acid, and hexadecanoic acid.  
     
     
         3 . The heat-absorbing particle as claimed in  claim 1 , wherein the heat-absorbing material further includes a dye.